Reference:
J.R.D. Frejo,
I. Papamichail,
M. Papageorgiou, and
B. De Schutter,
"A new macroscopic model for variable speed limits," Proceedings
of the 15th IFAC Symposium on Control in Transportation Systems (CTS
2018), Savona, Italy, pp. 343-348, June 2018.
Abstract:
This paper proposes a new macroscopic model for Variable Speed Limits
(VSLs), combining characteristics of previously proposed models, in
order to have the capability of modeling different capacities,
critical densities, and levels of compliance for links affected by
speed limits. Moreover, the effects of VSLs on the fundamental diagram
of traffic flow are studied concluding that, at least for the
considered stretch of the A12 freeway in The Netherlands, the capacity
of a freeway link is decreased (and the critical density is increased)
by reducing the value of the corresponding speed limit. Finally, it is
shown that the VSL-induced fundamental diagram is not triangular and
that the speed limit compliance can be very low if enforcement
measures are not applied.
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